spark plugs for boost?

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Sep 18, 2013 | 02:07 PM

dc4bill

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From: okc,vero beach FL

spark plugs for boost?

just something i havent really thought about much. what do you guys recommend

Sep 18, 2013 | 02:26 PM

gm-ntmr

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Sep 18, 2013 | 02:34 PM

denmah

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NGK tr6 works great for a junk yard LS any size 10-24lbs of boost

gap 28 for 10lbs and 22 for 20lbs

if you goto advance or autozone ask for part number 4177

Sep 18, 2013 | 02:43 PM

Ferocity02

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Tr6 here too, gapped at 0.028", running up to 13-14psi.

Sep 18, 2013 | 04:06 PM

SPRAYED 01

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I run the tr8 plugs. I used to run tr6 but don't see an issue with running a colder plug for some added safety

Sep 18, 2013 | 04:55 PM

jrpimp00

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BR7EF at .030 here and no problems

Last edited by jrpimp00; Sep 19, 2013 at 01:20 PM.

Sep 19, 2013 | 07:37 AM

dc4bill

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ill be running much lower boost than you guys , stock bottom end, 8lbs

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Sep 19, 2013 | 02:43 PM

SPRAYED 01

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Denmah, do you think there is any negative on running a tr8? Id imagine it would be safer for any boost level.

Sep 19, 2013 | 03:05 PM

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Unreal

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Easier to foul, harder starts, misfires at low load/rpm.

TR6s worked fine at 800rwhp in my car. Now running BR7EFs at ~1000rwhp. Got a set of TR7IX to swap in once I stop being lazy.

Sep 19, 2013 | 03:17 PM

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Mike@Diablosport

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Quote:

Originally Posted by Unreal

Easier to foul, harder starts, misfires at low load/rpm.

TR6s worked fine at 800rwhp in my car. Now running BR7EFs at ~1000rwhp. Got a set of TR7IX to swap in once I stop being lazy.

Assuming you are in an F-body, nobody will call you lazy for not wanting to change your plugs

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Sep 19, 2013 | 03:21 PM

#12

607motorsports

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NGK BR7EF's here on 15psi and a tad over 700whp, never had a hiccup.

Sep 19, 2013 | 04:03 PM

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SPRAYED 01

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Hmm,ive been running tr8s for a couple years. Ive put like 7k miles on a set and never had any issues. Guess im lucky

Sep 19, 2013 | 05:13 PM

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I8UR4RD

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From: Bama

tr6's will be fine for you. plugs are cheap. swaps are annoying. that is about it. there are plenty of threads on this hanging around.

Sep 19, 2013 | 05:25 PM

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Unreal

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Quote:

Originally Posted by Mike@Diablosport

Assuming you are in an F-body, nobody will call you lazy for not wanting to change your plugs

C6Z

It has been 105+ so waiting for it to cool down. Plus got some other things to do once they show up so might as well wait.

Sep 19, 2013 | 11:06 PM

#16

soundengineer

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Quote:

Originally Posted by Unreal

Easier to foul, harder starts, misfires at low load/rpm.

TR6s worked fine at 800rwhp in my car. Now running BR7EFs at ~1000rwhp. Got a set of TR7IX to swap in once I stop being lazy.

you only have those problems if your fueling is not correct.....
I've been on 9's and 10's for several years with my nitrous setup, and never had any issues with Fouling, Hard starts or misfires

plugs are clean at idle, and clean at WOT. (you dont need as much fuel as a lot of people think you need)

also, get rid of that irridium crap....makes it darn near impossible to read plugs to get fueling correct.....

also, you want a Non Protruded tip resistor plug.....less chance of a hot spot to cause detonation and less EMI interference issues that can cause misfires.

Sep 19, 2013 | 11:40 PM

#17

CameronVic

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Quote:

Originally Posted by SPRAYED 01

Denmah, do you think there is any negative on running a tr8? Id imagine it would be safer for any boost level.

I don't think there's an issue running a colder plug. Only reason I have 7s in is because I have an a2w and sub ambient IATs. Some would call 7s in my case overkill. lol

Sep 19, 2013 | 11:43 PM

#18

soundengineer

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there are no negatives to a colder plug if tuned corectly

you *might* lose a couple of 3-5 horsepower from going way too cold....but its not even enough to notice or worry about

Sep 20, 2013 | 02:02 AM

#19

stock48

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TR 6's here.

Sep 20, 2013 | 02:18 AM

#20

silverz28camaro

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From: st.louis

I ran BR7's during tuning, was running good until it started cutting out, (fouled plug I guess) I went to a TR6 , ran VERY good .

I am at 13 psi with 11.6 A/F 15 degrees timing WOT.

I want to go TR7IX Soon just to be safer and to go iridium.

FWIW I don't think they make an actual TR7 plug like a TR6, anything TR7 or TR8 will be iridium tr7IX or tr8IX IX being iridium and more expensive, if there is a regular tr7 or 8 let me know the part number I could never find one